Optical Compensator, Optical Element, Optical Scanning Head An Optical Scanning Device
    31.
    发明申请
    Optical Compensator, Optical Element, Optical Scanning Head An Optical Scanning Device 审中-公开
    光学补偿器,光学元件,光学扫描头光学扫描装置

    公开(公告)号:US20080239926A1

    公开(公告)日:2008-10-02

    申请号:US12088091

    申请日:2006-09-15

    IPC分类号: G11B7/135

    摘要: An optical compensator for use in an optical scanning device for scanning a first optical record carrier (3′) having an information layer (2′) at a first information layer depth d and a second optical record carrier (3″) having an information layer (2″) at a second, different information layer depth d2. The scanning of the first and second optical record carrier is effected using a scanning spot (16) formed on the information layer by a first radiation beam having a first wavelength and a second radiation beam having a second, different wavelength respectively. The optical compensator includes a substantially circular phase structure having an annular zone arranged in the path of the first radiation beam and the second radiation beam. The annular zone is adapted for imparting a wavefront modification to said first radiation beam causing destructive interference over the area of the scanning spot (16) for radiation incident on said annular zone; and a wavefront modification to said second radiation beam for compensating spherical aberration. A further aspect of the present invention relates to an optical element for defining the numerical aperture of a radiation beam. The optical compensator or optical element can be used for a two- or three-wavelength system. The invention also discloses an optical scanning head, and an optical scanning device using the optical compensator. The invention also relates to an optical scanning head and an optical scanning device.

    摘要翻译: 一种用于光学扫描装置的光学补偿器,用于扫描具有第一信息层深度d的信息层(2')的第一光学记录载体(3')和具有信息层的第二光学记录载体(3“) 层(2“)处于不同的信息层深度d 2。 第一和第二光学记录载体的扫描是利用形成在信息层上的扫描点(16)通过具有第一波长的第一辐射束和分别具有第二不同波长的第二辐射束来实现的。 光学补偿器包括基本圆形的相位结构,其具有布置在第一辐射束和第二辐射束的路径中的环形区域。 所述环形区域适于对所述第一辐射束赋予波前修正,对所述环形区域上的辐射在所述扫描点(16)的区域上产生相消干涉; 以及对所述第二辐射束的波前修改以补偿球面像差。 本发明的另一方面涉及一种用于限定辐射束的数值孔​​径的光学元件。 光学补偿器或光学元件可用于两个或三个波长系统。 本发明还公开了一种光学扫描头和使用光学补偿器的光学扫描装置。 本发明还涉及一种光学扫描头和光学扫描装置。

    Method and Device For Compensating Tilt of an Optical Data Carrier
    32.
    发明申请
    Method and Device For Compensating Tilt of an Optical Data Carrier 审中-公开
    用于补偿光学数据载体倾斜的方法和装置

    公开(公告)号:US20080232207A1

    公开(公告)日:2008-09-25

    申请号:US10575423

    申请日:2004-10-01

    IPC分类号: G11B7/095

    摘要: The invention relates to a method of and a device for compensating tilt of an optical or magneto-optical disc (1) exhibiting unknown tilt when placed in an apparatus for reading and/or writing data from and/or onto the optical or magneto-optical disc. A holographic optical element (23) containing a plurality of holograms each defining a phase profile able to compensate at least a specific coma amount is placed in a light path of an optical read/write unit (4) of the apparatus. The amount of tilt of the disc or coma introduced by the tilt is detected (14, 21), and a hologram defining a phase profile corresponding to the detected amount of tilt or coma is selected and accessed among the plurality of holograms of the holographic optical element for compensating the detected amount of tilt or coma. The invention applies to any type of optical data carrier such as so-called LD, CD, R-CD, DVD, DVD+R, DVD+RW, DVD-RW, DVR (Blue Ray).

    摘要翻译: 本发明涉及一种用于补偿显示未知倾斜的光学或磁光盘(1)的倾斜的方法和装置,当放置在用于从光学或磁光学上读取和/或写入数据的装置中时 光盘。 包含多个全息图的全息光学元件(23)被放置在装置的光学读取/写入单元(4)的光路中,每个全息图限定能够补偿至少特定的彗差量的相位分布。 检测由倾斜引起的盘或彗差的倾斜量(14,21),并且在全息光学的多个全息图中选择和访问定义与检测到的倾斜或彗差量对应的相位轮廓的全息图 用于补偿检测到的倾斜或昏迷量的元件。 本发明适用于任何类型的光数据载体,例如所谓的LD,CD,R-CD,DVD,DVD + R,DVD + RW,DVD-RW,DVR(蓝光)。

    Optical Scanning Device
    34.
    发明申请
    Optical Scanning Device 审中-公开
    光学扫描装置

    公开(公告)号:US20080186831A1

    公开(公告)日:2008-08-07

    申请号:US11817806

    申请日:2006-03-06

    IPC分类号: G11B7/00

    摘要: An optical scanning device (1) includes a radiation source (7), a detector (23) and a beam splitter (9). The radiation source (7) provides an incident radiation beam (4, 20) along a first optical path (19a) for scanning an information layer (2) of an optical record carrier (3). The detector (23) detects at least a portion of the radiation beam (22) reflected from the optical record carrier (3). The beam splitter (9) transmits the incident radiation beam (4) received from the radiation source along the first optical path (19a) towards the optical record carrier. The beam splitter (9) also transmits the reflected beam (22) received from the optical record carrier (3) along a second, different optical path (19b) towards the detector. The optical scanning device further includes a beam-deflecting element (30; 130; 230; 330; 630; 830; 930) positioned on the second optical path (19b) between the beam splitter (9) and the detector (23). The beam-deflecting element (30; 130; 230; 330; 630; 830; 930) is arranged to controllably deflect the path of the reflected radiation beam (22) for adjusting the lateral position of said reflected radiation beam incident upon the detector (23) over a predetermined range.

    摘要翻译: 光学扫描装置(1)包括辐射源(7),检测器(23)和分束器(9)。 辐射源(7)沿着第一光路(197)提供入射辐射束(4,20),用于扫描光学记录载体(3)的信息层(2)。 检测器(23)检测从光学记录载体(3)反射的辐射束(22)的至少一部分。 分束器(9)将从辐射源接收的入射辐射束(4)沿着第一光路(21a)传送到光学记录载体。 分束器(9)还将从光学记录载体(3)接收的反射光束(22)沿着第二不同的光路(20b)传送到检测器。 光学扫描装置还包括位于分束器(9)和检测器(23)之间的位于第二光路(19b)上的光束偏转元件(30; 130; 230; 330; 630; 830; 930)。 光束偏转元件(30; 130; 230; 330; 630; 830; 930)被布置成可控地偏转反射的辐射束(22)的路径,用于调节入射到检测器上的所述反射的辐射束的横向位置( 23)超过预定范围。

    Variable beam shaping element
    35.
    发明授权
    Variable beam shaping element 失效
    可变光束成形元件

    公开(公告)号:US07310189B2

    公开(公告)日:2007-12-18

    申请号:US10564535

    申请日:2004-07-07

    IPC分类号: G02B1/06

    摘要: A beam-shaping element includes a cavity, a first fluid and a second fluid having different indices of refraction. An optical axis extends through the cavity. The cavity has at least one curved surface extending transverse the optical axis. At least one pump is arranged to pump the fluids between a first configuration in which the first fluid occupies the cavity, and a second configuration in which the second fluid occupies the cavity.

    摘要翻译: 光束成形元件包括空腔,第一流体和具有不同折射率的第二流体。 光轴延伸穿过空腔。 空腔具有横向于光轴延伸的至少一个弯曲表面。 至少一个泵布置成在第一配置(其中第一流体占据空腔)和第二流体占据空腔的第二构造之间泵送流体。

    Collimating module and device for zero overfill illumination applications with beam width control
    37.
    发明授权
    Collimating module and device for zero overfill illumination applications with beam width control 有权
    准直模块和装置用于零过度照明应用,具有光束宽度控制

    公开(公告)号:US07907345B2

    公开(公告)日:2011-03-15

    申请号:US12670433

    申请日:2008-07-25

    IPC分类号: G02B27/30 G02B5/02

    摘要: A collimating module is presented. The collimating module comprises a rounded light entry side and a rectangular light exit side. A collimating device is also presented, and a method for providing collimated light. The collimating device comprises a first collimator having a light entry side and a light exit side, a scattering component having a light entry surface arranged adjacent to said light exit side, and a light exit surface. The collimating device further comprises a collimating module having a light entry side arranged adjacent to said light exit surface.

    摘要翻译: 提出了一个准直模块。 准直模块包括圆形光入射侧和矩形光出射侧。 还提出了一种准直装置,以及提供准直光的方法。 准直装置包括具有光入射侧和光出射侧的第一准直仪,具有邻近所述光出射侧布置的入光面的散射分量和光出射面。 准直装置还包括具有邻近所述光出射表面设置的入光侧的准直模块。

    OPTICAL SCANNING DEVICE
    38.
    发明申请
    OPTICAL SCANNING DEVICE 审中-公开
    光学扫描装置

    公开(公告)号:US20100046347A1

    公开(公告)日:2010-02-25

    申请号:US11814012

    申请日:2006-01-18

    IPC分类号: G11B7/135

    摘要: An optical scanning device for scanning optical record carriers, the optical record carriers including a first optical record carrier, a second optical record carrier and a third optical record carrier, the scanning device including a radiation source system (7) for producing first, second and third radiation beams for scanning said first, second and third record carriers, respectively, in first, second and third scanning modes, said first, second and third radiation beams having different predetermined wavelengths, the scanning device comprising an objective lens and an optical compensator, the optical compensator having a non-periodic phase structure through which each of said first, second and third radiation beams are arranged to pass, said non-periodic phase structure including a plurality of stepped annular zones separated by steps, the zones forming a non-periodic radial pattern, the stepped annular zones introducing first, second and third different wavefront modifications into at least part of the first, second and third radiation beams, respectively, characterized in that said objective lens is arranged to apply a focus offset when scanning said first record carrier, which focus offset is arranged to provide a phase modification which, in combination with said optical compensator, compensates spherical aberration in the first radiation beam.

    摘要翻译: 一种用于扫描光学记录载体的光学扫描装置,所述光学记录载体包括第一光学记录载体,第二光学记录载体和第三光学记录载体,所述扫描装置包括辐射源系统(7),用于产生第一,第二和 用于分别以第一,第二和第三扫描模式扫描所述第一,第二和第三记录载体的第三辐射束,所述第一,第二和第三辐射束具有不同的预定波长,所述扫描装置包括物镜和光学补偿器, 所述光学补偿器具有非周期相位结构,所述第一,第二和第三辐射束中的每一个被布置成通过,所述非周期性相位结构包括由台阶分开的多个阶梯状环形区域, 周期性径向图案,阶梯形环形区域引入第一,第二和第三不同波前修改 分别是第一,第二和第三辐射束的至少一部分,其特征在于,所述物镜被布置成在扫描所述第一记录载体时施加聚焦偏移,所述聚焦偏移被布置成提供相位改变,其结合 所述光学补偿器补偿第一辐射束中的球面像差。

    Optical scanning device with tilt detection
    40.
    发明授权
    Optical scanning device with tilt detection 有权
    具有倾斜检测功能的光学扫描装置

    公开(公告)号:US07359294B2

    公开(公告)日:2008-04-15

    申请号:US10531014

    申请日:2003-09-15

    IPC分类号: G11B7/00

    摘要: This invention relates to an optical scanning device for scanning an optical record carrier and detecting a tilt characteristic of the optical record carrier during scanning. The device includes a redirecting structure (26) arranged on an objective lens (10) to redirect a part of a radiation beam, when travelling towards the record carrier, differently to a main part of the radiation beam. The redirected beam part follows a path which is different to that of a path followed by the main beam part, towards a position sensitive detector in a detection system (16).

    摘要翻译: 本发明涉及一种用于扫描光学记录载体并在扫描期间检测光学记录载体的倾斜特性的光学扫描装置。 所述装置包括布置在物镜(10)上的重定向结构(26),以在朝向记录载体行进时重新定向辐射束的一部分,不同于辐射束的主要部分。 重定向的光束部分遵循与检测系统(16)中的位置敏感检测器相对应的跟随主光束部分的路径不同的路径。